/Engine/Source/Editor/BlueprintGraph/Classes/K2Node_Variable.h
Validates there are no errors in the node
void CheckForErrors ( const class [UEdGraphSchema_K2](API\Editor\BlueprintGraph\UEdGraphSchema_K2) * Schema, class [FCompilerResultsLog](API\Editor\UnrealEd\Kismet2\FCompilerResultsLog) & MessageLog )